: Click on the link and check if you can find what you´re looking for.: : : I have a sansui A500 stereo amplifier, but the left speaker output-port is not working - when I try to connect to a speaker there is a voltage-spark produced. Does this has to do with the "STK4843" IC ????: : Does anyone has the sansui A500 integrated stereo amplifier schematic diagram - please let me know!